Hey Wherry you've got this board, if it paddles well then you can make a start and this will do you for quite a while yet, just go out and don't think too much ! It is a good learning board!
Yes longer again would be easier, but this board is way ahead of the stuffaround 6'2" you were thinking of.
With any board you are still quite a while from being able to competent in the water only water time will give you that, enjoy the learning
I've taken up troll hunting just for fun, instead of a rifle I'll just use a pun!